雅思口语P2 Describe a businessman you admire(祖父)

My grandfather is the one that I'd like to talk about. He who now looks very patient used to be a very successful businessman. He works in the fields of environmental protection. The clean energy you know. By the way, he is my grandfather, we look exactly like the same. To be precise, he used to be quite well known in my region. All of the citizens nearby my hometown get to know him, undoubtedly. As I have mentioned above, he looks rather tall, a very patient old man now. But his attitude to work could be very positive, sometimes a bit serious and if I could have the opportunity to work with him, I would be nervous all day long. I suppose that I would learn a lot from his rich experiences of work and life. In the past, he told me that doing the same kinds of work for a long time, then you would be very successful in your area. So, he is the businessman who I look up to. That is it.